fluorescence-guided surgery in laryngeal- and hypopharyngeal cancer: a feasibility trial

Conditions: Squamous Cell Carcinoma of the Larynx; Squamous Cell Carcinoma of the Hypopharynx

Summary: this is an open-label, single-dose, prospective clinical trial. the study comprises 2 work packages. the main objective of work package i (wp-1) is to assess feasibility of fluorescence imaing (fli) during total laryngectomy (tle) and to assess the optimal dose of the crgd-zw800-1. work package ii (wp-ii) is designed to assess whether fli can detect and decrease tumor positive margins after a tle.

this is a two staged clinical trial to investigate intraoperative fluorescence imaging in patientsundergoing tle. wp-i is a dose finding study in which 2 doses will be tested with a possibility of a third dosing group. every dosing cohort comprises 3 patients. after wp-i, an interim analysis will be performed to decide the optimal dose. the optimal dose will be based on the tbr and the performance in detecting the most close margin (i.e. 'the sentinel margin'). a tbr of at least 1.5 is required for the optimal dose. if a positive margin is missed with fluorescence imaging, the concerned dose will be defined as suboptimal. wp-ii is an extension cohort of the optimal dose cohort selected in wp-i. wp-ii will comprise of 18 patients. the endpoints for wp-ii are: * the rate of tumor free resection margins based on the current golden standard; * sensitivity, specificity and positive predictive value of fli; * the intraoperative change in surgical management based on fli; * fli of excised cervical lymph nodes; * influence of previous radiotherapy on the fli performance; * adverse events and toxicity after intravenous injection with crgd-zw800-1;

Eligibility criteria:
inclusion criteria: * patients with biopsy-proven squamous cell laryngeal and hypopharyngeal cancer, eligible for surgical resection of the tumor by tle; * ≥ 18 years of age; * written informed consent must be obtained; * sufficient knowledge of the dutch language to understand the informed consent form; exclusion criteria: * history of a clinically significant allergy or anaphylactic reactions to any of the components of the agent; * other synchronous biopsy proven malignancies currently active, except for adequately treated in situ carcinoma of cervix and basal, squamous cell skin carcinoma, or other head- and neck squamous cell cancer; * patients pregnant or breastfeeding; * patients with renal insufficiency (defined as egfr \< 60); * patients with previous kidney transplantation or a solitary functioning kidney; * patients using medications that may significantly impair renal function (i.e. nsaids, particularly cox-2 inhibitors), that cannot be paused during the course of the study; * patients with asa classification of 4 or higher; * patients with measured qtc of 500 ms or higher at screening; * patients with laboratory abnormalities defined as: * aspartate aminotransferase, alanine aminotransferase, gamma glutamyl transferase) or alkaline phosphatase levels above 5 times the uln or; * total bilirubin above 3 times the uln or; * platelet count below 100 x 109/l or; * hemoglobin below 4 mmol/l (females) or below 5 mmol/l (males). * immuno-compromised patients who do not have the ability to respond normally to an infection due to an impaired or weakened immune system, caused by either a preexisting disease or concomitant medications;

Keywords: tumour specific fluorescence imaging